12x15.5 vs 10x15 Poly Mailers

Not sure which to pick? Use the Packaging Tools to get a recommendation.

Choose 12x15.5 when your item fits the 12x15.5 footprint. Choose 10x15 when your item needs more room in the 10x15 footprint.

12x15.5 options

• 12x15.5" Black Self-Seal Poly Mailers 2.5 Mil - 100/Case
  $29.98In stock
• 12 x 15.5" Self-Seal Poly Mailers 2.5 Mil - Tear Strip, Case of 500
  $65.88In stock
• 12x15.5" Self-Seal Poly Mailers 2.5 Mil - Puncture Resistant, 100 Pack
  $20.86In stock
• 12x15.5" Clear View Self-Seal Poly Mailers 2.5 Mil - Case of 100
  $29.98In stock
• 12x15.5" Red Self-Seal Poly Mailers 2.5 Mil - 100/Case
  $29.98In stock
• 12x15.5" Double-Strip Returnable Poly Mailer, 2.5mil, 100/Case
  $20.37In stock

10x15 options

• 10x15 White Tyvek Self-Seal Envelopes - Tear & Moisture Proof, Case of 100
  $58.68In stock
• 15x10" Kraft Inter-Department Envelopes w/ String Closure - Case of 100
  $80.93In stock
• 15x10 Kraft Redi-Seal Envelopes 28lb - Press & Seal, Case of 250
  $147.98In stock
• 10x15" Kraft Clasp Envelopes 28lb Woven Paper - Reusable, Case of 500
  $181.32In stock

When to use

• Deciding between 12x15.5 and 10x15 for a new SKU or packaging refresh.
• Cost, protection, and throughput tradeoffs.

When not to use

• Edge cases where neither option fits — check the related guides.

Frequently asked